<p>CHEMISTRY CODE: SCS21 2014-2015 SCHOOL YEAR INSTRUCTOR: Ms. Bui CLASSROOM: 510 LAB ROOM: 506 ATOMIC CONCEPT ISOTOPE – In action</p><p>Name______Period: ______Date: ______Subject: Chemistry</p><p>Science Starter: 1. Carbon has an atomic mass of 12.0111. Carbon is mostly composed of two isotopes: C-12 and C-13. C- 12 has an atomic mass of 12.0 amu and C-13 has an atomic mass of 13.0335 amu. Which isotope has a higher relative abundance?</p><p>2. How many protons and neutron does Neon-21 (Ne-21) have?</p><p>Video Question</p><p>1. Based on the videos, are there different water isotopes?</p><p>2. If so, explain why there are different water isotopes?</p><p>3. How can isotopes then be used to identify where the water has been?</p>